[2]: 307–8 According to Roma Niyogi, Unaula can be identified with the place called Oṇavala mentioned in two copper plate grants of the Gāhaḍavāla monarch Govindachandra, although it's unspecified if Niyogi is referring to Unaula Khas or to nearby Unwal.

These two inscriptions describe Oṇavala as a pathaka and name two pattalās as part of it: Sirasī (identified with present-day Sirsi) and Goyara.

At the turn of the 20th century, the village of Unaula was described as "wholly insignificant", with a population of just 312 as of 1901.

[4]: 302–3 The 1981 census recorded Unaula Khas as having a population of 677 people, in 94 households.

The village did not have a post office or public library; there was at least some access to electricity for all purposes.